SammiChen created HDFS-11268:
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Summary: Persist erasure coding policy ID in FSImage
Key: HDFS-11268
URL: https://issues.apache.org/jira/browse/HDFS-11268
Project: Hadoop HDFS
Issue Type: Improvement
Affects Versions: 3.0.0-alpha1
Reporter: SammiChen
Assignee: SammiChen
Currently, FSImage only has the information about whether the file is striped
or not. It doesn't save the erasure coding policy ID. Later, when the FSImage
is loaded to create the name space, the default system ec policy is used to as
file's ec policy. In case if the ec policy on file is not the default ec
policy, then the content of the file cannot be accessed correctly in this case.
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